From 5f17ec1fa2be1eb950d9afb997260aee5c0ad9cc Mon Sep 17 00:00:00 2001
From: Gregory Nutt <gnutt@nuttx.org>
Date: Wed, 27 May 2015 08:25:26 -0600
Subject: [PATCH] Enhanced output to NSH ping command from Max Neklyudov

---
 nshlib/nsh_netcmds.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/nshlib/nsh_netcmds.c b/nshlib/nsh_netcmds.c
index 5f8b0e080..7339b7d59 100644
--- a/nshlib/nsh_netcmds.c
+++ b/nshlib/nsh_netcmds.c
@@ -1291,6 +1291,17 @@ int cmd_ping(FAR struct nsh_vtbl_s *vtbl, int argc, char **argv)
                      DEFAULT_PING_DATALEN, staddr, seqno, elapsed);
           replies++;
         }
+      else if (seqno < 0)
+        {
+          if (seqno == -ETIMEDOUT)
+            {
+              nsh_output(vtbl, "seq=%d Request timeout\n", i);
+            }
+          else if (seqno == -ENETUNREACH)
+            {
+              nsh_output(vtbl, "seq=%d Network is unreachable\n", i);
+            }
+        }
 
       /* Wait for the remainder of the interval.  If the last seqno<i,
        * then this is a bad idea... we will probably lose the response